Bulky aryl functionalized carbazolyl ligands: amido alternatives to the 2,6-diarylphenyl ligand class?

Dalton Transactions : an International Journal of Inorganic Chemistry
Natalie D CoombsSimon Aldridge

Abstract

Sterically encumbered amido ligands based on a 1,8-diarylcarbazol-9-yl backbone have been investigated as electronically distinct alternatives to the widely-used terphenyl ligand class in the stabilization of low-coordinate metal complexes, and structurally characterized for the first time. While 1,8-diphenylcarbazol-9-yl derivatives are readily available, facile rotation about the Cipso-Cipso bonds leads to structurally characterized main group derivatives {e.g., [(1,8-Ph,-3,6-Me2C12H4N)K]2} in which the coordination geometry at the metal centre is augmented by secondary metal arene interactions. By contrast, the extra bulk inherent in the corresponding 1,8-dimesityl ligand results in essentially perpendicular alignments of the arene and carbazole planes, and a substituent-enforced sterically protected pocket. Comparative structural studies of complexes containing the GaCl2 fragment imply that the 1,8-dimesitylcarbazol-9-yl framework offers greater steric protection at the metal centre than does the corresponding 2,6-dimesitylphenyl ligand.

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Citations

Feb 16, 2013·Inorganic Chemistry·Rhiannon S MoorhouseDeborah L Kays
Aug 30, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Meghan A Dureen, Douglas W Stephan
Jan 21, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Alexander J BlakeDeborah L Kays
Aug 22, 2015·Chemical Society Reviews·Deborah L Kays
Mar 19, 2015·Chemistry : a European Journal·Fabrizio OrtuDeborah L Kays
Apr 6, 2011·Chemistry : a European Journal·Hassanatu B MansaraySimon Aldridge
Dec 15, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Deborah L Kays
Feb 5, 2019·Chemistry : a European Journal·Alexander Hinz
Jan 13, 2018·Chemical Communications : Chem Comm·Roberto Nolla-SaltielDeborah L Kays
Aug 1, 2008·The Journal of Organic Chemistry·Maria S MudaduRandolph P Thummel

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